The subheadings under 854911–854919 capture spent cells, batteries, and accumulators classified by chemical composition or sort status, while 854921 and 854929 specifically cover electrical and electronic waste destined for precious-metal recovery. If the primary commercial purpose of the shipment is metal reclamation rather than hazardous disposal, the 8542x subheadings apply; classification should be confirmed against the actual downstream processing intent and the heading notes.

Imports of hazardous e-scrap—particularly waste containing lead, cadmium, or mercury—may be subject to EPA Resource Conservation and Recovery Act (RCRA) requirements, including notification and consent procedures under the Basel Convention framework as implemented in US regulations. State-level restrictions can add further requirements depending on the port of entry and final destination. Consulting a licensed customs broker and environmental compliance counsel is advisable before importing regulated e-scrap.

Unsorted waste from primary cells and batteries falls under 854914, while broader unsorted electronic waste not containing primary cells or batteries would typically fall under 854999. If the lot contains hazardous components such as CRTs or accumulators, 854991 may apply. Because mixed lots often span multiple subheadings, a detailed material composition analysis is recommended before entry.